<template>
  <li
    :class="isactive"
    @mouseenter="onmousehandle('enter')"
    @mouseleave="onmousehandle('leave')"
  >
    <label>
      <input type="checkbox" :checked="done" @click="changeDonehandle" />
      <span>{{ todo }}</span>
    </label>
    <button class="btn btn-danger" @click="deleteTodoHandle">删除</button>
  </li>
</template>

<script>
export default {
  name: "Item",
  props: ["todo", "id", "done"],
  data() {
    return {
      isactive: "",
    };
  },
  methods: {
    //鼠标移入移出事件
    onmousehandle(value) {
      value === "enter" ? (this.isactive = "active") : (this.isactive = "");
    },
    changeDonehandle() {
      this.$emit("changeDonehandle", this.id);
    },
    deleteTodoHandle() {
      this.$emit("deleteTodoHandle", this.id);
    },
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
/* 定义list鼠标移入移出样式 */
li.active {
  background: #d9d3b9;
}
li.active button {
  display: block;
}
</style>
